Associated interferometers using multi-fiber optic delay lines
US10006754B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2016 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Sep 19, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B2290/60
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An interferometer apparatus which include two or more coupled fiber optic Michelson interferometers using fiber optic stretches which stretch two or more optical fibers wound around the perimeter of the optical fiber stretchers by the same amount is disclosed. Preferably a pair of reference and sample fiber optic stretches are utilized which run in a push-pull mode of operation. When one of the interferometers is a coherent light interferometer it can be used as a reference distance scale for all of the remaining low coherence light interferometer. A method for measuring a physical property of a device under test is also disclosed using the apparatus of the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.